Population
28,076
2025
−0.6% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
Montgomery County, IL: population growth, jobs and income
Montgomery County gained 239 residents between 2024 and 2025 (+0.9%).
Montgomery County had an estimated 28,076 residents in 2025, down 0.6% (168 fewer people) since 2020. That is about as fast than Illinois as a whole (−0.6%), and the 25th fastest growth of 102 counties in Illinois.
Data as of 2025 · updated
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In the Montgomery County report
One-time $99 PDF: everything on this page for Montgomery County, ranked against Illinois and the U.S., plus these figures that are not on the free page:
- Median gross rent$723/mo2020–24
- Vacant homes, incl. seasonal and second homes9.4%2020–24
- New homes permitted, last 12 months182025-10/2026-09
- Rent growth, 5 yearsIn the report
- Permits in 5+ unit buildingsIn the report
- IRS income moving in (net AGI)In the report
- Neighbouring-county comparison tableIn the report
What's inside: 5 pages
- 1 Summary, headline numbers and ranks (free preview)
- 2 Ranks and the neighbouring-county table
- 3 Migration, with IRS mover and income flows
- 4 Rent, vacant homes, permits and employers
- 5 Every source and the methods
Headline numbers
Net domestic migration
+335
2025
11.9 per 1,000 residents
+487 in total, 2021–2025
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. People moving in from other U.S. counties minus people moving out.
Unemployment rate
4.6%
2025
−0.2 pts since 2019
Source: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics, 2025. Annual average unemployment rate.
New homes permitted
11
2025
0.4 per 1,000 residents
Small base: the change swings on a few homes or people, so we don't show it.
Source: U.S. Census Bureau, Building Permits Survey, 2025. Housing units authorized by building permits in the year.
Median household income
$63,620
2020–24
+15.9% since 2016–20
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–24. American Community Survey 5-year estimate.
Private-sector employment
7,538
2023
+5.0% since 2018
Source: U.S. Census Bureau, County Business Patterns, 2023. Paid employees of private employers in mid-March (County Business Patterns).
What the numbers say
Net domestic migration added 335 people in 2025: more people moved in from other U.S. counties than moved out.
Private employers had 7,538 paid employees in mid-March 2023, +5.0% since 2018 (County Business Patterns).
Unemployment averaged 4.6% in 2025, 0.2 points lower than in 2019 (before the pandemic).
Builders were authorized to start 11 new homes in 2025, or 0.4 per 1,000 residents.
Median household income was $63,620 in the 2020–24 American Community Survey, +15.9% since 2016–20.
Across the 3,107 U.S. counties with a comparable estimate, its population growth ranks 2,076th.
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Montgomery County population by year
| Year | Population | Change |
|---|---|---|
| 2025 | 28,076 | +239 |
| 2024 | 27,837 | +46 |
| 2023 | 27,791 | −167 |
| 2022 | 27,958 | −170 |
| 2021 | 28,128 | −116 |
| 2020 | 28,244 | – |
Census Bureau population estimates, July 1 of each year.
What drove the change in Montgomery County
Montgomery County lost 168 people since 2020 even though 487 more people moved in from other U.S. counties than left: deaths outnumbered births by 652, and net international migration added 11.
| Component | 2025 | 2020–25 | Share |
|---|---|---|---|
| Natural changebirths minus deaths | −92 | −652 | |
| International migrationfrom and to other countries | −2 | +11 | |
| Domestic migrationfrom and to other U.S. counties | +335 | +487 | |
| Census adjustmentbalancing residual | −2 | −14 | |
| Total change | +239 | −168 |
Census Bureau population estimates, components of change, each year July 1 to June 30. The components add up to the change in the estimate; the Census adjustment is the small balancing figure the Bureau publishes.
How it ranks
| Measure | In Illinois | Among U.S. counties |
|---|---|---|
| Population growth | 25th of 102 | 2,076th of 3,107 |
| Net domestic migration per 1,000 residents | 2nd of 102 | 393rd of 3,108 |
| Private-sector job growth | 22nd of 102 | 1,208th of 3,092 |
| Median household income | 66th of 102 | 1,718th of 3,107 |
| Lowest unemployment rate | 54th of 102 | 2,181st of 3,108 |
| New homes permitted per 1,000 residents | 69th of 98 | 2,497th of 3,005 |
1st = highest (lowest for unemployment). Counties are ranked only against others with a figure for the same period.
Get the county report — $99
The County Growth and Demographics Report for Montgomery County, IL as a PDF, from federal data: population and migration, housing and rents, permits, private employers and jobs, unemployment, ranks in the state and the country, and neighbouring counties, with a source next to every number. Pay once, no subscription.
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Neighbouring counties
Over 2020–25, Montgomery County's population change (−0.6%) was ahead of 6 of its 7 neighbouring counties and behind 1 (Bond County).
5 of its 7 neighbouring counties had a higher median household income than Montgomery County's $63,620 (2020–24).
| County | Population2025 | Population change2020–25 | Net domestic migration per 1,000 residents2025 | Homes permitted per 1,000 residents2025 | Median household income2020–24 |
|---|---|---|---|---|---|
| Montgomery County, IL This county | 28,076 | −0.6% | 11.9 | 0.4 | $63,620 |
| Christian County, IL | 33,443 | −1.5% | 2.6 | 1.8 | $62,611 |
| Bond County, IL | 16,959 | +0.6% | 23.6 | 1.5 | $65,959 |
| Fayette County, IL | 20,790 | −3.2% | −4.6 | 0.1 | $60,944 |
| Macoupin County, IL | 43,748 | −2.6% | 0.5 | 1.6 | $70,805 |
| Sangamon County, IL | 194,170 | −1.0% | −0.5 | 1.2 | $75,357 |
| Madison County, IL | 263,110 | −1.0% | 1.2 | 1.7 | $75,793 |
| Shelby County, IL | 20,576 | −1.6% | 5.3 | 2.2 | $72,095 |
Census Bureau population estimates and building permits, American Community Survey 5-year income. Rates per 1,000 residents. – means no figure, or a base too small for a change or rate (it would swing on a few people). A figure from another period shows its year and is left out of the comparison.
Questions
Is Montgomery County growing?
No. Its population fell 0.6% between 2020 and 2025, about 168 fewer people (Census Bureau population estimates). Illinois as a whole changed −0.6% over the same years. That ranks 25th of 102 counties in Illinois for population growth.
How many people moved to Montgomery County?
On net, about 335 people in 2025: that many more moved in from other U.S. counties than moved out (Census Bureau net domestic migration estimate).
What is the unemployment rate in Montgomery County?
It averaged 4.6% in 2025 (BLS Local Area Unemployment Statistics, annual average).
What is the population of Montgomery County?
About 28,076 people, according to the U.S. Census Bureau's population estimate for July 1, 2025.
How many jobs are in Montgomery County?
Private employers there had 7,538 paid employees in mid-March 2023, +5.0% since 2018 (Census Bureau County Business Patterns; government jobs and the self-employed are not counted).
What Beacon CRE covers in Illinois
Map, parcel and listing layers cover North and South Carolina only for now. This page and the other Illinois county pages carry the public federal growth figures.
Montgomery County data alerts
Email me when Montgomery County gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.
Sources and method
- U.S. Census Bureau, Population Estimates Program (Vintage 2025)
- U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics
- U.S. Census Bureau, Building Permits Survey
- U.S. Census Bureau, American Community Survey 5-year estimates
- U.S. Census Bureau, County Business Patterns
Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.
Jobs outside North and South Carolina use County Business Patterns (paid private-sector employees in mid-March); wages and government jobs are not included.